Apparatus for paper-mills.



SA NHYCHELL` APP.ARMUS Fon PAPER MILLS.

APPLICATI'ON FILED FEB. 2) i918.

atened Sept, 3, EHS.

S.' MITCHELL.

APPAR/uus'fon PAPER' Mms. APPLICATION FILED FEB. 27,1918.

1,??,631 e Patented Sept. 3, 1918,

@El Y 3 SHEETS-SHEET 2.

(/M 05. ATTORNEYS- S. MHCHELL.

APPARATUS FR PAPER MILLS.

APPLICATION FILED F-EB. 21. :91s.

sHEETs-SHEET 3.

naar

trainers SIDNEY MITCHELL, or new rotin, n.

APPARATUS ron Persistants.

Specification of Letters Patent.-

Patented Sept, E, 15H8.

Application filed February 27, 1918. Serial No. 219,370.

To all whom t may concern:

Be it known that SIDNEY MITCHELL, a citizen ofthe' United Stat-es, residingat New York, in the county of New York and State of New York, have invented certain new and useful ln'iproveuients in Apparatus for Paper-Mills; and do hereby fle- Clare the following-.to be a. full, clear, and exactdeseription of the invention, such as will enable others skilled in the art- -to which it appertains to make and use the same, reference being had to the accom-panyingdrawings, and to characters of retereuce marked thereon, which form apart of this specication.

The present invent-ion relates,l generally,

to improvements in paper millr machinery; and the invention has reference, more particularly,=to a novel apparatus for preparing raw paper stock torintroduction to the pulpA beaters common-ly used in the paper manufacturing industry.

The invention has for its principal object to provide an apparatus for use in mills which use -waste paper asthe ran' material or stock from which new paper products are manufactured, and to this end my invention, provides a novel means '-f'or automatically preparing such waste pape" (which is usually brought; to the mills in bales) for introduction into the pulp beaters used 'for beating the saine out into a tibrous pulp. The novel apparatus therefore comprises a means for automatically opening and loosening up the contents of a bale waste paper, sorting out 'foreign mater-lah and softening and coarsely tweaking; up the mass of Waste pap-or prelin'iinazty to subjecting the saine to the action of a pulp beater, so that a t(great savinpy in hug'nanl labor is at.-

Htained, a saving' of tinie and energy in the pulp beater ope 'ation due to the'preliminary softening and breaking ofthe paper stock, and a consequent saving in cost per ton in the Whole manufacturing process.

Other objects of the present invention, not at this time more particularly enumerated, will be clearly understood from the following;r detailed description of the same. With the various objects of my present vinvention in view, the same consists, priinariiy, in the novel preparing apparatus for raw paper stock hereinafter set forth; and the invention consists, furthermore, in the novel arrangements and combinations ,of the various devices and parts, as'well as in the details of the construct-ion of said devices andparts, all ot which will be more fully described .in the following specification, and tien finally embodied in the claims 60 appended thereto,

The invention is clearl' illi ""ated in the accompanying drawings. in iidnicht?w Figures 1^ and 1B, taken together, illustrate a vertical longitudinal section of the 6a novel raw paper stock preparing apparatus, made according to and einloo(tyingl the prin cipiers of my present inrruition; i? 2 is detail horizontal ser: i, taken ou line 2e-2 in said i, looking downward. is adetail transverse section taken. on line 3-3 in said l.^, looking;r toward the right.; and Fig. 4 is another detail transverse section, taken on line l-iin said Fig. 1^, also looking toward the riglit' Fig. ois a detail transverse. section, taken on line tis-5 in said Fig: 1B, looking' toward the right.

Similar characters of reference are einployed in all of the hereinabove described S@ views, to indicate corresponding parts.

Referring` now to the said drawings, the reference character i indicates a, suitable supporting trame-work upon which a part. ot the ai'iparatus mountedL upon the forward end of said traine-Work is a tipping platform pivotally supi. 'irted by :i shaft fournalcd in the standards or bearing' pedestals #3, platform 'being normally supported in hom a stop-traino engaging its forward end..

suitable convehf'er mechanism (i is connected with said supporting frame-Work l so-tliat its discharge cud is adjacent to said tipping platform 2. said 'frame-work 1 is a downwardly inclined bale openingr and loosening; apparatus, the same comprisingr a Arotatable tubular barrel or drinn '7 open from end t0 end.v Secured upon the outer circumference of said barrel 10.0

or drutn, adjacent to each end thereof, is an outwardly lprojeeting annular flange f4. Mounted in proper location upon said supporting frame-Work 1 are cradle Standards .f'having curved scat portions 10 conforming 105 'shafts l2', upon which are mount-ed Vertical 110v rollers 12, which engaefe i n supporting relation the pernneters or4 said annular flanges ing. s 'fo Mounted ntal plane by 9,@

Also supported upon 8 in such a manner that said barreiior drum 7, When rotated, rides upon said rollers 12. The seat portions 10 of said cradle standards 9 are provided with suitable openings `18 in which said rollers 12'are disposed, so

that the periphery of the latter project slightly-above the surface of said seat portions 10. Said standards 9 are further provided With spaced radial journal portions 14 adapted to support spindles 15Aupon which are mounted horizontal` idlerrollers 16, which engage the rear sides of said flanges 8 to prevent longitudinal displacement of.

said barrel or drum 7 'when rotated. Said standards and their several rollers are so disposed and supported on said frame Work 1 at different relativeelevations as to provide said barrel or drum 7 With a -dovvn- Wardly inclined pitchv from its receiving end toward its discharge end. The means for rotating said barrel or drum 7 comprisesan external annular Worm gear 17 secured upon the external surface of said barrel or drum. Secured upon said frame-Work 1 are bearings 18 in which is journaled a transverse driving shaft 19. Secured upon said driving shaft is a Worm 20 which meshes operatively with the teeth of said worm gear 17. Said driving shaft is driven from any de sired source of power by any suitable transmission means, the means illustrated being a pulley 21 and driving belt 22. Secured to the inner circumferential surface of said drum or barrel 7 are a plurality of in- Wardly projecting radial sharpened fingers orspikes 23, the same bei-ng preferably disposed in a spirally extending line around the interior of the barrel or drum, from one end to the other, although other groupin arrangement may be employed if desire Secured upon said frame-Work 1, so as to be positioned directly beneath the discharge end of said barrel or drum7, is a blower device 24, having its discharge nozzle 25 directed outwardly in line with the discharge' end of said barrel or dpum. Said blower, as shown in the drawings,i preferably of the rotary type, driven by the shaft 26, pulley 27 and belt 28.

The reference character 29 indicates a receiving trough or vat, which is positioned adjacent to the discharge end of safid barrel or drum 7 ,but removed slightly therefrom to provide the intervening space 30. The forward end of said trough or vat 29 is provided With a forwardly projecting hood having a receiving opening 32 of dimensions approximating the size of the discharge end of said barrel or drum ,7, and spaced slightly away from the samel Connected with the upper portion ofsaid hoodis a spray-head 33 fed by a supply pipe 34, the same being adapted' to discharge hot Water into the forward end of` said trough or vat. Extending transversely through the upon the remaining shafts.

interior of the main body of said trough or vat in longitudinally spaced relation to each yother are a series of shafts 35, the same being journaled inl bearings 3G secured eX- ternally upon the sides of said trough or vat. Secured upon each shaft 35 are a plurality of laterally spat 'd paddle devices 37, each having'a pair of oppositely extending curved paddle arms 3S, The arrangement and relative spacing of said shafts and their paddle devices 87 is such, that the free ends of said paddle arms 38 of the paddle devices of one shaft. intervene between the free ends of the paddle arms of paddle devices ofA adjacent neighboring shafts, thus providing an interloclnng relation of the paths of movement of said paddle arms. The .means for driving said shafts 35 is preferably such that alternate .shafts and their paddle devices are driven in opposite directions.. The means illustrated for so driving the shafts 35 comprises an extension of one of said shafts to a bearing standard. 39, thus constituting said shaft a primary driving shaft 40. Mounted on said primary driving shaft 4.0 is a gear-Wheel. 4l which meshes operatively with mutually inter-.

meshed gear-wheels 42 mounted respectively Said primary driving shaft 4() may be driven from any desired source of power by any suitable transmission means, the means illustrated being a pulley 43 and driving belt 44.

The bottom of saidvat or trough 29 is divided by transverse partitions 45 into a. plurality of receiving pits 46 arranged to be respectively located beneath each set of paddle devices 37, and in' addition to said pits 4G there is provided a. forward pit 47 disposed beneath sai hood 31, and covered with a suitable gratingpdevice 48. The side Walls o f said trough lor `vat are provided with hand-hole'ppenings 49 at one or both ends of said pits above described, the same be-A ing normally closed by hand-hole plates or covers 50secured in place by the nut and bolt devices 51, or by any other suitable fastening means.

Said vat or trough 29 is preferably provided With a cover-member 52 as shown. Arranged at the rear end of said trough or vat is a forwardly and 'downwardly inclined drift-catching shelf or platform 53, upon whichfloating foreign material, such as excelsior, Wood, cork, or any other similar substances, which owing to their specific gravity will float on the surface of the Water in the trough or vat, may be caught and brushed out or otherwise removed through the opening 54 in said cover member 52.

Connected with the bottom of said vat or trough 29, preferably at its rearward end is a drain pipe 55, having a suitable gate valve 5G.

The vali of said trough or vat is 1A) so that the bale falls provided with a suitably disposed overflow discharge opening or gate 57 which communicates with a suitable conduit structure 58 which employed in paper mills for producing the desired fibrous pulp for the papermaking machines.

Having thus described the construction of my novel paper stoclr preparing.apparatus, I will now brieiiy 'describe the operation of the same in practice. In paper mills utilizing waste and scrap paper as the raw material for producing pulp stock for the proper machines to convert into new paper product, the said waste and scrap paper is shipped to the mill in bales.A Ordinarily these bales must be opened and loosened up,`the foreign material sorted out, and the waste or scrap paper' then fed to the pulp beaters by hand. By the use of my novel apparatus, however, a large part of the hand labor thus necessary is eliminated. ratus the bale 59 of waste and scrap paper is 'placed upon thereby upwardly to the tipping platform 2 upon which it is deposited. "While resting on the platform (as shown in Fig. 1A) the binding wires or cords 60 holding the bale together are cut and removed therefrom. The platform'Q is then tipped down (as indicated by the dottedv .lines in Fig. p into the receiving end of the rotating barrel or drum Immediately the fingers or spikes 23 engage and tear apart the paper scrap loosening the same from its compressed relation in the bale, While the latter-is tulnbled about in said rotating barrel or drum. The barrel or drum being'downwardly inclined toward its discharge end, the lingers or spikes 23 in their spiral arrangement or disposition aiding, the loosened paper scrap is caused to' more 'toward the discharge end of 'said barrel or drumu The barrel or drum is constructed of sufficient-length to assure the entire loosening up and separation of the paper scrap from the bale form by the time it reaches the discharge end of the same. As the loosened and separated papcr'scrap falls from the discharge end of the.barrel or drum it comes in contract with a strong blast of air emitted from the blower device 2l. This blast of air carries the scrap paper across the interif'ening space 30 and precipitates the same into the hood 31, so that the same falls into the forward end of the vat or trough 29. Since it frequently occurs that bales of waste or scrap paper Icontain foreign substances and articles, Such as pieces of metal, wood, bottles,'glass, etc., which are comparatively heavy, and'.- which must be separated from the scrap, so as not to be deposited eventually in a pulp beater, the substantially horizontal movement of leads to the usual pulp beaters When employing my appa-11 theconveyer 6, and carried 'the bottomof the vat or trough, lodges within the pits 46 in which it is re-' 4 foreign material 'possessingthe loose scrap across the space 30, under automatically separated before the paper enters the Vat or trough 29. i

The paper scrap thus precipitated within the forward end of the vat or trough 29 falls into the wat-er content of the vat or trough and under thev shower of hot water discharged thereupon from thespray-head 33 connected with the hood 31. The hot water thus 'causes a preliminary wetting down and softening of the paper scrap,

causing the same to submerge itself in the 'vat or trou h, and then flowy toward the rotating pa die devices 37. Fine pieces of metal, glass and other hard, substances,

which may still be carried with the scrap into the vat or trough tend to sink to the bottom, and work their way throughthe grating 18 into the forward ,pit 4:7. A slow 'flow-of water is maintained through the vat or trough from its forward to rearward end, fed and maintained, by the discharge from the spray-head 33. 'This flow of thevwater carries along the paper scrap into contact with the revolving arms 38 of the paddle devices 37. The said paddle devices engaging the wet and softened scrap tend to break the samel up and further. soften the sameal though not beating the same out to-fibrous pulp. As the scrap is thus softened and broken up while flowing rearward inv engagement with 'theg-paddle arms 38, any heavy foreign material, such as metal, glass, etc, still carried therein works its Way 'to and linally tained. Amy buoyancy suiiicient to permit the same to Hoat, such as wood, eXcelsior, straws, etc., w'ill'work its way to the surface, and will be carried by the low into engagement with the drift collecting self or platform 53, the forward end of which inclines forwardly and downwardly slightly beneath the surface of 4the water so as to obstruct and catch the drift of such floating material. The breaker device thus provided by the vat or trough 29 and its mechanism serves both as a sorting or separating device, and las a softening and breaking up means, and the same is made 'of sufficient length to assurethat the mass of scrap, by the time it reaches the discharge end, is pretty well softened and broken up or coarsely. subdivided, so that upon. arrival at the overflow dischargeopening 57 the mass will overliow continuously into the conduit structure 58, whence it is conveyed to the usual pulp beater. The mass of scrap paper .being .thus softenedand broken up before delivery to the pulp beater, it will be apparent that it may be much more quickly beaten out by the pulp beater inlo the desired fibrous pulp with much less eX- penditure of power and time, than is the ease when hard dry unbroken scrap is deposited in the pulp beate.' as is ordinarily done. i

The vai or trough 29 niay be cleaned ont occasionally, by draining' oil the wa er Content, and thenl opening' the hand hole openings 45) so that the collection ot Yforeign substances may. be removed from the pits ti and 47. y

From the above description ot' the construction and operation ot my novel apparatus, it will yhe clearly understood that paper scrap and waste may be easily and automatically prepared for deposit within a pulp beater with a minimum expenditure of labor, powe and time, since the .power saved over the requirement tor operatingn pulp beaters upon dry aard paper scrap will be more than necessary tor operating` ray preparing` apparatus, and since the operations can be continuously carried on with little necessary interruption.

I am aware that some changes may be made in the various arrangements and conibinations of the several devices and parts, as well as in the details of the construction thereof, without departing from the scope ot my present invention as set foi-th in the foregoing; specification, and as defined inthe appended,claims. Hence, l do not limit niy invention to the exact arrangements and vcombinations ol the said devices and parts as described in the foregoing specication, nor do I confine myself to the exact details ot' the construction ot said parts as illustrated in the accompanying drawings.

I claim 1- 1. ln apparatus ot the kind described, a rotatable druni'open from end to end, bearing means for supportingi said drinn in downward inclination, mezins 'for rotating; said drinn, a plurality of inwardly extending radially disposed spikes grouped in spaced relation around the"interior sides of said drum, a Vat positioned with its receiv.- ing end adjacent. to the discharge end of said drinn, a water feed means for said via-t, a plurality of rotatable ,paddle-devices mounted within said vat, oyertlow discharge means connected with the discharge end of said vat, and a. blower devicelo Kated beneath the discharge end of said drinn to direct an air blast toward the receiving end of said vat.

Q. l'n apparatus ot the kind described, a rotatable drinn open from end to end, bearing,` means tor supporting said drinn in downward inclination, means for rotating said drinn` a plurality ol' inwardly extending radially disposed spikes grouped in spaced relation around the interior sides of 1 ,arnesi said drinn. a vat with a receiving@ f Apnl. t o gli@ i .huidige head coiiiierted hood for diseharnin t'eceiiinn` end o? transverse sliatls en r said npr-iii ma; 'dially disposed spikes gr uped in spa relation around 'the interior sides drinn, a mit having a hood provided -Cg' opening; positionet" diaend et said i spray-head connected with the upper side of said hood for discharging water streams into the reeeiviin;` end ot said vat` a plurality oic transverse shafts extending through the .main body ot said vat, a series of paddle devices having paddle arms mounted on each shaft, means for rotating said shafts, means for subdividing the bottoni of said vatinto a plurality7 of pits, the sides of said vat having openingsA communicating 'with said pits, detachable means for closing said opening, 'overflow discharge means connected with the discharge end of said vat, and ay blower device located beneath the dis-l charge end of said drinn te direct an4 air blast toward the receiving opening of said hood. Y

fi. in apparatus ot the kind described', a rotatable drinn open 'freni end to end, bearing' means tor supporting; said drrim in do* iiward inclination,"means for rotating sani drinn, a plurality of'inwardly extend-- ingr radially disposed spikes grouped in spaced relation around the interior sides et id drum, a' vat hai-'ing a hood provided; with a receiving; opening' positioned adjacentv to the discharge end of said drinn, a spray-head connected with the upper side of said hood 'for discharging Water streams into the receiving end of said vat, a plurality ol traiisverse shafts extending through the main body of said vat, a series of paddle devices having paddle arms mounted on each shaft, means for rot-ating said shafts, means for subdividinir the bottoni of said vat into .fi plurality of pits, the sides of said vat having' openings connnunieatingwith said pits, detachable means for closing said openings, overflow discharge means connected with the llO discharge end of said vat, and adownwardly and forwardly inclining drift collat lecting shelf at the rear end of said v fit.

.5., In apparatus of the kind described, a rotatable drinn open from end to end, bearing means for supporting said drum in downwardinclination, means for rotating `said arm, a plurality of inwardly extending radially disposed spikes grouped in spaced relation around the interior sides of said drum, a vat having a hood provided with a p receiving opening positioned adpicent to the.

discharge end of saiddruni, a spray-head connected with the upper sideof said hood foncliscliarging water streams into the receiving end of said vat, a plurality of trans verse shafts extending through the 'main yoverflow discharge means connected with .the discharge end of said vat a downwardly and forwardly inclining drift collecting shelf at the rear end of said vat,` and a blower device located beneath the discharge end of said drum to direct an `air blast to* ward the receiving opening of said hood.

6. In apparatus of the kind described,

' means for opening and loosening bales of vat, and air' blast means for blowing said,

scrap paper, means foi` wetting down, softening and breaking up the loosened scrap paper, and an airblast' means for blowing the loosened Vscrap from the former means into the. latter ineans while allowing heavy foreign substances t5 drop by gravity from said scrap.

,7. In apparatus bof the described,

means for opening and loosening bales of scrap paper,l means for ,wetting down, softning and breaking up the loosened' scrap -papcr,compiising a vat positioned to receiyethe' scrap from said bale opening means, a water feedv means for said vat, a plurality of rotatable paddle devices mounted within said vat, overflow discharge means connected with the discharge end of said spray-head connected with the upper side of said hood and discharging into said .vat, a plurality of transverse shafts extending through the main body of said vat, a series 0f paddle devices mounted onl cach shaft,

for closing saidopenings, and overflow discharge means connected with the rear end of said vat.

9 In apparatus of lthe kind described,

means for opening and loosening bales of scrap paper-means for wetting down, softening and breaking up the loosened scrap paper, comprising a vatr having a hood provided with' a receiving opening, a water spray-,head connected with the upp'er side vofisaid hood and discharging into said vat,

a plurality of transverse shafts extending through the main body of said'v vat, a series of paddle devices mounted on each shaft,

.means for rotating said shafts, means subdividing said vat into a plurality of pits beneath said shafts and their paddle devices, the sides of said vat having openings coinmunicating with said pits, and detachable means for closing said openings, overflow discharge means connected with the rear end of said vat, and air blast means for blowing said scrap from said bale opening means into said'vat while allowing heavy foreign substances to drop by gravity from said scrap.

10.,In apparatus o f the kind described, means for opening and loosening bales of scrap paper, means for wetting down, softoning and breaking up the loosened scrap paper; comprising a vat having a hood provided with a receiving opening, a water spray-head connected with the upper side of said hood and discharging into said vat, a plurality' of `transverse shafts extending through the mainbody of said vat, a series of paddle devices mounted on each shaft, means for rotating-said shafts, means subdividing said vat into a plurality of pits beneathsaid shafts and their paddle devices, the sides of said vat having openings commuiiicating with said pits, detachable means for closing said openings, overflow discharge means connected with the rear end of said vat, and a downwardly and forwardly inclining drift collecting shelf at the rear end of said vat.

l1. In apparatus of the kind described, means for opening and loosening balesof scrap paper, means forii'etting down, softening and breaking up the loosened scrap paper, comprising a vat havinga hood provided with `a receiving opening, a water spray-head connected with the upper side of said hood 'and discharging into said vat,

a plurality of transverse shafts extending' through the main body of said vat, a series of paddle devices mounted en each shaft, means for rotating said shafts, means subdividing said vat into a plurality of pits beneath said ist shafts and their paddle devices, the sides of said vat having openings communicating with said pits, detaeliahle ,means for closing said openings, overliow discharge means connected with the rear end of said vat, a downwardly and forwardly inelining drift cols lecting shelf at the rear end of said vat, and air blast means for blowing said sc ap from said bale opening means into said vat while allowing heavy foreign substances to drop by gravity from said scrap. w

l2. In apparatus of the kind described, a scrap paper bale opening and loosening means comprising a rotatable drum open from end to end, external annular flanges on said drum, cradle standards disposed to support said drum in downwardly inclined position, vertical idler rollers carried by said cradle standards in supporting relation to the peripheries of said annular flanges, hori-v zontal idler rollers carried by said cradle standards in engagement with the rear side of said annular flanges to prevent longitudinal displacement of said drum, an external worm gear connected with said drum, a powei-diiven shaft, a worm on said shaft meshing with said worm gear, and a plurality of inwardly extending radially disposed spikes grouped in spaced relation around the interior sides of said drum.

13. In apparatus of the kind described, a scrap paper bale opening and loosening 'means comprising a rotatable drum open from end to end, external annular flanges on said drum, cradle. standards disposed to support said drum in downwardly inclined position, vertical idler rollers carried by said cradle standards in supporting relation to the peripheries Aof said annular flanges,`

horizontal idler rollers carried by said cradle standards in engagement with therear side of said annular flanges to prevent longitudinal displacement of said drums, an external worm gear connected with said drum, a power-driven shaft, a worm on said shaft meshing with said worm gear, a plurality of inwardly extending radially disposed spikes grouped in spaced relation around ,the interior sides of said drum, and means for wetting down, softening and breaking up scrap aper discharged 4from said drum.

14. n apparatus of the kind described. a scrap paper bale opening and loosening means comprising a rotatable drum open from end to end, external annular flanges on said drum, cradle standards disposed to sup port said drum in downwardly inclined poldinal displacement of said drum, an external worm gear connected with said drum, 'a

power-driven shaft, a worm on said shaft meshing with said worm gear, a plurality of inwardly extending radially disposed spikes grouped in spaeed'relation around the interior sides of said drum, means for wetting down, softening and breaking up scrap paper discharged from said drum, and a blower device beneath the discharge end of said drum for blowing scrap paper dis charged from said drum into said wetting down, softening and breaking up rmeans while allowing heavy foreign substances to drop by gravit-y from said scrap.

l5. n apparatus of the kind described, a scrap paper bale open-ing and loosening means comprising a rotatable drum open from end to end, external annular flanges on said drinn, cradle standards disposed to support said drum in downwardly inclined po sition, vertical idler rollers carried by said cradle standards in supporting relation to the peripheries of said annular Hanges, horizontal idler,v rollers carried by said cradle standards in engagement with the rear side' of said annular ianges to prevent longitudinal displacement of said drum, an external -ivorm gear connected with said drum, a .power-driven shaft, a worm on said shaft meshing' with said worm gear, a plurality of hood provided with a receiving 'openingApo-f sitioned adjacent to the discharge end of said drum to receive the scrap therefrelm, a sprayhead conncted with the upper side of said hood for dischargingwater streams into the receiving end of said vat, a plurality of transverse shafts extending through the main body of 4said vat, a series of paddle'tlevices having paddle-arms mounted on each shaft, the paddle devices of each shaft rotating in overlapping intermediate paths. 'of movement relative to the paddle devices of adjacent shafts, means for rotating alternate shafts and their paddle devicesin opposite directions, means subdividing the bottom of said vat into a plurality of pits, the sides of said vats having openings communicating with said pits` detachable means for closing i \l6. In apparatusy of the kind described,

a scrap paper bale opening and loosening means comprising a rotatable drum open from end to end, external annular flanges on said drum, cradle standards `disposed to support saidldruin in downwardly `inclined posit-ion', vertical idler rollers carried by said cradle standards in supporting relation ,to the peripheries of said annular flanges, horizontal idlerrollers carriedv by said cradle the interior standards in engagement with the rear side of said annular Hanges to prevent longitudinal displacement of said drum, an external Worm gear connected with said drum, a power-driven shaft, a worin on said shaft meshing with said worm gear, a plurality of inwardly extending radially disposed spikes grouped in spaced relation around sides of said drum, a vat having a hood -provided with a receiving opening positioned adjacent to -the discharge end of said drum to receive the scrap therefrom, a 'spray head connected withthe upper side of said hood .for disclulrgingr water streams into the receiving end of said vat, a plurality of transverse shafts extending through the main body of said vat, a yseries of paddle devices having paddle. Aarms mounted on'ieach shaft, the paddle devices 4u p means while allowing .device located of each shaft rotating m overlapping intermediate paths of movement relative to the paddle devices of adjacent shafts, means for rotating valternate shafts and their paddle devices in opposite directions, means subdividing the bottom of said vat into a plurality of pits, the sides of said vats having openings eo'mmlmicating with said pits, detachable means for closing said openings, a downwardly and forwardly inclined drift collecting shelf at the rear end of said vat,

overflow discharge means .connected with' the discharge end of said vat, and a blower said drum to blow said scrap discharged from the latter into said vatwhile allowing heavy foreign substances to drop by gravity from said scrap. Y

i7. Inapparatus of the kind described, 1.1 'ms for opening and loosening bales of scrap paper, means for feeding bales to said opening and loosening means, means for wetting down, softening and breaking up the loosened scrap paper, and an air blast means for blowing the loosened scrap from said bale opening and loosening means into said wetting down, softening and breaking heavy foreign sub` stances to drop by gravity from ysaid scrap. 18. In apparatus of the kind1 described, a vat having a hood provided with a receiving opening, a spray-head connected with the upper side of said hood for discharging water streams into the receiving eudof said vat, a plurality of transverse shafts extendbody of said vat, a having paddle arms the paddle devices ing through the main series of paddle devices mounted on each shaft,

paddle devices of adjacent beneath the discharge end ofl 'means at the discharge ofleach shaft rotating in overlapping intermediate paths of movement relative to the shafts, means for rotating alternate shafts and their paddle devices in opposite directions, and an Overtlow discharge means at thedischarge end of said vat.

19. In apparatus of the kind described, a. vat having a hood provided with a receiving opening, a spray-head connected with the upper side of said hood for discharging water streamsinto the receiving end of said vat, a plurality of transverse shafts eX- tending through the main body of s'aid vat, a. series of paddle` devices having paddle arms mounted on each shaft, the paddle devices of each shaft rotating in overlapping intermediate paths of movement relative to the paddle for rotating alternate shafts and their paddle devices in opposite directions, 'means subdividing the bottom of said vat into a plurality of pits, the sides of said vats having openings communicating with said pits, detachable means for closing said opening e l and anv overow discharge means at the diswith the upper side of said hood for discharging water streams into the receiving end of ysaid vat, a plurality of transverse shafts extending through the main body of said vat, a series of paddle devices having paddle arms mounted on each shaft, the paddle devices of each shaft rotatmg 1n overlapping intermediate paths of movement relative to the paddle devices of adjacent shafts, means for rotating alternate shafts and their paddle devices in opposlte directions, means subdividing the bottom of said vat into a plurality of pits, the sides of said vats having'openings communicating with said pits, detachable means for closing said openings, a downwardly and forwardly inclined drift collecting shelf at the rear end of s'aid vat, and an overflow` discharge end of said vat.

In testimony that I claim the invention set forth above I have hereunto set my hand this 20 dayof February, 1918.

JAMES Tono, Jr., MATHIAS PLUM.

devices of adjacent shafts, means 

